It’s not known, however, whether the virus makes these birds very sick

By Janet Raloff, 15:11 PM May 17, 2014

Scientists have uncovered bird flu germs in Adélie penguins in Antarctica. The virus didn’t infect many of those birds. But it is so unlike other flu viruses that biologists think it may have been evolving in isolation for decades. That has turned it into a distinctly Antarctic germ.

Bird flu viruses tend to be widely dispersed around the globe. And no wonder. Migratory birds can carry these viruses wherever they fly. Many of these long-distance travelers can migrate between two or more conti...